// Copyright (c) 2023 Broadcom. All Rights Reserved. The term "Broadcom" refers to Broadcom Inc.
// and/or its subsidiaries.
//
// This software, the RabbitMQ Java client library, is triple-licensed under the
// Mozilla Public License 2.0 ("MPL"), the GNU General Public License version 2
// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2.  For the ASL,
// please see LICENSE-APACHE2.
//
// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
// either express or implied. See the LICENSE file for specific language governing
// rights and limitations of this software.
//
// If you have any questions regarding licensing, please contact us at
// info@rabbitmq.com.
package com.rabbitmq.perf.metrics;

import java.time.Duration;

/**
 * Contract to format and output metrics.
 *
 * @since 2.19.0
 */
public interface MetricsFormatter {

  void header();

  void report(
      Duration durationSinceStart,
      double publishedRate,
      double confirmedRate,
      double nackedRate,
      double returnedRate,
      double receivedRate,
      long[] confirmedLatencyStats,
      long[] consumerLatencyStats);

  void summary(
      Duration elapsed,
      double ratePublished,
      double rateReceived,
      long[] consumedLatencyTotal,
      long[] confirmedLatencyTotal);
}
